[Bug 679652] New: [0.11] Minibobject lock/unlock race

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=679652
  GStreamer | gstreamer (core) | 0.11.x

           Summary: [0.11] Minibobject lock/unlock race
    Classification: Platform
           Product: GStreamer
           Version: 0.11.x
        OS/Version: All
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: matej.knopp at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=218367)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=218367)
Patch

gst_mini_object_lock/unlock with  GST_LOCK_FLAG_EXCLUSIVE sometimes fails to
increment/decrement lock state. It happens when
g_atomic_int_compare_and_exchange fails to update the variable on the first
time, because access_mode does not have GST_LOCK_FLAG_EXCLUSIVE flag set
anymore.

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